var jeditor = require("gulp-json-editor");

/*
  edit JSON object by merging with user specific object
*/
gulp.src("./manifest.json")
  .pipe(jeditor({
    'version': '1.2.3'
  }))
  .pipe(gulp.dest("./dest"));

/*
  edit JSON object by using user specific function
*/
gulp.src("./manifest.json")
  .pipe(jeditor(function(json) {
    json.version = "1.2.3";
    return json; // must return JSON object.
  }))
  .pipe(gulp.dest("./dest"));

/*
  specify [js-beautify](https://github.com/beautify-web/js-beautify) option
*/
gulp.src("./manifest.json")
  .pipe(jeditor({
    'version': '1.2.3'
  },
  // the second argument is passed to js-beautify as its option
  {
    'indent_char': '\t',
    'indent_size': 1
  }))
  .pipe(gulp.dest("./dest"));

/*
  specify [deepmerge](https://github.com/TehShrike/deepmerge) option
*/
gulp.src("./manifest.json")
  .pipe(jeditor({ 
    "authors": ["tomcat"] 
  },
  // the second argument is passed to js-beautify as its option
  {},
  // the third argument is passed to deepmerge options, eg, arrayMerge options
  { 
    arrayMerge: function (dist,source,options) {return source;} 
  }))
  .pipe(gulp.dest("./dest"));

gulp.src("./manifest.json")
  .pipe(jeditor({
    'version': '1.2.3'
  },
  {
    beautify: false
  }))
  .pipe(gulp.dest("./dest"));